ORIGINAL ARTICLE
Atronectria thelotrematis (Sordariomycetes), a remarkable new pyrenomycete on Thelotrema lepadinum from Chile, with a key to the lichenicolous fungi growing on Thelotrema
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Laboratory of the Systematics and Geography of Fungi, Komarov
Botanical Institute Russian Academy of Sciences, Professor Popov 2,
St. Petersburg, 197376, Russia
Online publication date: 2022-12-05
Publication date: 2022-12-05
Plant and Fungal Systematics 2022; 67(2): 34-39
KEYWORDS
ABSTRACT
Atronectria thelotrematis, a lichenicolous pyrenomycete growing on Thelotrema
lepadinum, is described as new to science from Chile. The species is characterized by black
perithecioid ascomata; a brown, not changing color in K and lactic acid, N+ reddish orange
exciple resembling textura angularis or textura epidermoidea; 0–4-septate periphyses; a I−,
K/I− hymenium with rather rare lipid droplets; the absence of distinct interascal filaments;
inoperculate, unitunicate, cylindrical, 8-spored, I−, K/I− asci; and hyaline to occasionally
light brown, smooth to mostly finely verruculose, 1-septate, homopolar ascospores, uniseriate
in the ascus. A key to ten species of lichenicolous fungi known to occur on Thelotrema
is provided.
FUNDING
This study was carried out within the framework of the research
project of the V. L. Komarov Botanical Institute of the
Russian Academy of Sciences ‘Biodiversity, ecology, structural
and functional features of fungi and fungus-like protists’
(122011900033-4) using the equipment of its Core Facility
Center ‘Cell and Molecular Technologies in Plant Science’. The
author’s visit to UPS herbarium was financially supported by the
Rolf Santesson foundation.
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